8. Ten cu ft of helium at 20 psia and 80°F are compressed isentropically 1-2 to 80 psia. The helium is then expanded polytropically 2-3 with n = 1.30 to the initial temperature. An isothermal 3-1 returns the helium to the initial state. Find T2, V2, P3, Qa, Qr, W, S3-1, and mep.

Q: S healed al constant pressure from 1.7 m, 27 °C and 97 kPa to 417 °C. It is then cooled at constant…

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Q: Q3 A partition is placed between two tank as shown in figure. Initially tank 1 contains 3.4 kg of…

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Q: Calculate the work done W by a closed system containing m= 1kg of steam, when it is compressed (a)…

A: Step 1:Step 2:

Q: Balloon planes are filled with 5,000 moles of helium. The initial helium state is 101.325 kPa and…

A:

Q: mass of hydrogen

A: m=0.19820Kg T2= 0.5478 K

Q: An ideal gas enclosed in a 1.77ft3 rigid tank initially at 70°C and 0.93kg/cm2 . Find the…

A: Given data,  V1= 1.77 ft3 = V2 (volume of tank is going to be constant.)  T1= 70°C = 343 K  P1= 0.93…

Q: If 4 lb of NH3 at 200 psia and 360°F are cooled at constant volume to t2 =100°F, find (a) p2, (b)…

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Q: 50 moles of neon is enclosed in a cylinder with a movable piston. By placing the cylinder in contact…

A: To find: The value of Q,W,DU and Dh for each process and the whole cycle. Given: The process AB is…

Q: RT B- Find an expression for Cp - Cv if the equation of state is p =- v-b for an ideal gas 34 - and…

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Q: Methane gas is pumped into an expandable container and is heated until the vilume of the container…

A: The compressibility factor is to quantify the deviation of real behavior from the ideal gas…

Q: The temperature before and after the adiabatic process is 200 K and 127°C. The pressure before the…

A: Given data:

Q: Example 2 An oxygen cylinder has a capacity of 300 L and contains O₂ at 3.1 MPa and 18 °C. The value…

A:

Q: For the statements in them, put T if they are true and F if they are false. a) ( ) An ideal gas…

A: Dear student, we are suppose to solve only 3 sub parts, please post other parts as a separate…

Q: Q) Saturated (liquid+ vapor) ammonia at 60°C

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Q: An oxygen cylinder has a capacity of 300 L and contains O₂ at 3.1 MPa and 18 °C. The value is open…

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Q: Methane (CH4) is stored in a closed, rigid container of 0.5 m3 at a pressure of 9.28 MPa. Initially,…

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Q: (D) A balloon was filled with hydrogen gas with 1.41*10* liters at 21°C and 745 torr. The…

A: Given:V1=1.41*104 L =14.1 m3T1=21°C =294 KP1=745 torr =745*0.133 =99.085 KPaT2=-48°C =225 KP2=63.1…

Q: B- Find an expression for Cp - Cv if the equation of state is p = for an ideal gas. RT v-b and Show…

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Q: Your steam has a Data of 5.32 MPa and 325 ℃. Find v, u, h and s.

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Q: B- Find an expression for Cp - Cv if the equation of state is p = RT for ideal gas. na an - and Show…

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Q: 3-26 Complete this table for refrigerant-134a: T, °C P, kPa v, m2/kg Phase description -4 320 10…

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Q: An oxygen cylinder has a capacity of 300 L and contains O₂ at 3.1 MPa and 18 °C. The value is open…

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Q: A container that is rigid contains 500L of steam T=662F and P=8000 kPa. Heat is extracted from the…

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Q: Assume 20 lbm of an ideal gas with R=50 ft-lb/lb-R and k=1.18 are heated from 75 to 200F. What is…

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Q: A rigid tank contains water vapour at 250°C and an unknown pressure. When the tank is cooled to…

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Q: A. Calculate the pressure of vapor at a temperature of 400°C and a density of 20 kg/m using (a) the…

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Q: 3–34 Complete this table for H,O: T, °C P, kPa v, m³/kg Phase description 140 0.05 550 Saturated…

A: I have used steam tables to calculate the different properties.

Q: 3 1 kg of O, occupies a volume of 1m at 127°C. Find its pressure using the perfect gas equation and…

A: At 127 degrees Celsius, 1 kilogramme of O2 takes up 1 m3 of space.We must use the perfect gas…

Q: 13m/min of air at 1.0 atm, T1 = 16°C and o1 = 41% is heated to T2 = 27°C. Then the air is humidified…

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Q: Calculate the work done W by a closed system containing m= 1kg of steam, when it is compressed (a)…

A: Step 1:Step 2:

Q: Calculate the maximum amount of water that can be poured into a 50-liter container at a temperature…

A: Given data: Temperature difference, dT=200-15=185°CPressure difference, dP=50 atmIsothermal…

Q: AIR P- const. 85 L of air at 250 kPa and 25 °C is contained in an insulated piston-cylinder device…

A: According to 1st law of thermodynamics, for a closed cycle, the net heat interaction equal to net…

Q: (a) A certain perfect gas at temperature 15 °C and pressure 250 kN/m², occupying a volume of 0.35 m³…

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Q: One cubic meter of an ideal gas at 600 K and 1000 kPa expands to five times its initial volume as…

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.